Nice looking horn Randy! I dare say a wandering hornsmith from the east probably transplanted hisself to St. Lou and using locally available horns, e.g., buffalo, promptly set up shop and conducted business as usual. At least that's my opinion. 'Course, I could be wrong.
Gary
Gary,
There certainly were buffalo powder horns made at St. Louis. Probably the best known are the buffalo powder horns with the bone inlays in the butt plug as well as in the body of the horn. William Clark, of Lewis And Clark fame, carried one of these "St. Louis School" powder horns on their 1804 Corp of Discovery.
Tecumseh carried an eastern style buffalo powder horn that is now in a museum in England, having been taken off his body at the Battle of the Thames, also known as the Battle of Moraviantown, in 1812.
History records that the last buffalo killed in Pennsylvania was in 1803. Buffalo in other states west of Pennsylvania, but still east of the Mississippi, had free roaming buffalo at times later than 1803. There were buffalo horns available in several eastern states where there was also a shortage of cow horns.
Randy Hedden